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Roofer repointing a brick chimney stack with new lead flashing

Chimney Repairs & Repointing

Most 'chimney leaks' are actually lead-work failures — the roofers we route you to diagnose the real entry point before quoting anything.
Published by Find Trusted Roofers · Last updated
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About chimney repairs & repointing

The chimney stack takes more weather than any other part of a house. On older properties, it's usually the first thing to fail: frost-shattered bricks, crumbling mortar joints, cracked flaunching around the pots, and leaks where the lead flashing meets the roof. Chimney specialists in our network handle repointing in the correct mortar mix, which matters most on older brick. They also carry out partial and full rebuilds, capping and cowls for disused flues, and flaunching repairs. Since most chimney leaks actually start at the lead, they renew the aprons, soakers and back gutters as standard, not as an afterthought.

How we help

Find Trusted Roofers is a national network that connects UK homeowners with local roofers. Since we are not a roofing contractor, we don't do the work ourselves. Instead, you tell us about your chimney repairs job once. We then match you with a roofer in our network who covers your postcode and works on your roof type. Every roofer quotes from their own survey, and you deal directly with them and choose whether to proceed.

We check the roofers in our network against Companies House, and confirm public liability insurance. We also note any TrustMark, NFRC or CompetentRoofer membership. We verify what we can, although we don't guarantee the work itself. The work is always contracted directly between you and the roofer.

Chimney Repairs & Repointing — FAQs

How much does chimney repointing cost?

Repointing a typical stack costs around £400–£1,000 depending on height and access, since scaffolding usually needs hiring either way. Combining chimney work with other roof repairs often saves money on that access cost.

Why is water coming in around my chimney?

The most common causes are failed lead flashing where the stack meets the tiles, and cracked flaunching on top of the stack. Porous or frost-damaged brickwork absorbing water is another common cause. Since each has a different fix, proper diagnosis matters more than a quick smear of sealant.

Should I cap a chimney I don't use?

Yes — a capped, ventilated flue keeps rain and birds out while letting the stack breathe. Sealing a flue completely with no ventilation traps moisture and causes damp inside the chimney breast.

Can my chimney be repaired, or does it need rebuilding?

If the brick faces are spalled (blown) or the stack leans, a partial rebuild from the roofline up is often the durable answer. If the bricks are sound and only the joints have weathered, repointing does the job. It costs a fraction of a rebuild.

Do you need scaffolding for chimney work?

Usually yes — either a scaffold tower or a purpose-built chimney scaffold. It's a legal safety requirement for most stack work, and any honest quote itemises it clearly.

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